A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

A hollow, compressible or rigid hollow body has mechanical retaining devices such as sound generators, scent capsules, LED lights and vibrating mechanisms and identifying or responding detection elements held, secured and locked therein without the use of any solvents, glues, sonic welding, spin welding or other bonding materials. The hollow contaminant-free bodies are particularly useful for animals and recreation. Some of the above contain carcinogens harmful to animals if ingested.

An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

A knee rehabilitation system includes a plurality of compressible resistance members, a knee garment, and a resistance member receptacle. Each compressible resistance member in the plurality of compressible resistance members has (i) a same size and a shape as each other compressible resistance member in the plurality of compressible resistance members, and (ii) a compression resistance different from each other compressible resistance member in the plurality of compressible resistance members. The knee garment has a knee garment ventral portion and a knee garment dorsal portion. The resistance member receptacle is coupled to the knee garment dorsal portion, and the resistance member receptacle is sized to carry each compressible resistance member in the plurality of compressible resistance members, one at a time.

A target for sport goal is configured to attach to a cross member of a goal, such as a hockey goal, a soccer goal, lacrosse goal, and other such goals. The target includes a sleeve member that has an interior radius corresponding to that of the intended goal to which it is mounted. Attachment slots receive an attachment strap to secure the sleeve to the cross member. Suspension slots are disposed to receive a suspension strap that secures a target in a desired orientation relative to the length of the sleeve. The target is configured such that the target provides an audible or visual indication when the target is struck by a game object, such as a puck, a ball, or the like.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

A weightlifting bar and a weight equipment system may provide grooves and/or spaces that may provide a color. The placement of the grooves and/or spaces may prevent users from improperly utilizing the weightlifting bar and weight equipment system when lifting the bar. The weightlifting bar and weight equipment system may also prevent injury to users by providing guidelines to ensure symmetry of user hands and/or fingers along the weightlifting bar.